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Earthing system
An earthing system, also known as a grounding system, is the set of conductors and electrodes connecting an electrical installation to earth, ensuring safe fault clearance.
Earthless
Earthless is an American instrumental psychedelic rock trio from San Diego, California, formed in 2001, known for long, largely improvised jams drawing on Krautrock and stoner metal.
Earthlings (film)
Earthlings is a 2005 American documentary written, produced, and directed by Shaun Monson and narrated by Joaquin Phoenix, with music by Moby and Natalie Merchant.
Earthly branches
The earthly branches (地支, dizhi) are a cyclic sequence of twelve terms used in the traditional Chinese calendar to name years, months, days, and two-hour periods.
EarthOptics
EarthOptics, formerly GroundTruth Ag, is a Minneapolis, Minnesota soil technology company founded in 2018 that uses sensors and machine learning to map soil compaction, carbon, and nutrients.
Earthquake
An earthquake, also called an earth tremor, is a shaking of the ground caused by a sudden slip on a fault, releasing energy as seismic waves through the crust.
Earthquake (1974 film)
Earthquake (1974) is a Universal disaster film directed by Mark Robson, starring Charlton Heston and Ava Gardner, depicting Los Angeles destroyed by a massive quake; first film in Sensurround, grossing over $167 million and winning the Best Sound Oscar.
Earthquake (Jisoo song)
earthquake (지수) is a 2025 song by BLACKPINK's Jisoo, title track of her debut mini album AMORTAGE, released February 14, 2025 via Blissoo and Warner Records; it topped Billboard World Digital Song Sales and its MV passed 100 million views.
Earthquake Bird
Earthquake Bird is a 2019 Netflix psychological thriller directed by Wash Westmoreland, adapted from Susanna Jones's 2001 novel, starring Alicia Vikander as translator Lucy Fly, suspected in her friend Lily Bridges's disappearance in 1989 Tokyo.
Earthquake bomb
The earthquake bomb, or seismic bomb, is a heavy deep-penetration bomb invented by Barnes Wallis in World War II, including the Tallboy and Grand Slam.
Earthquake early warning
Earthquake early warning (EEW) detects an earthquake that has already begun and sends alerts giving people seconds to tens of seconds to take protective action before strong shaking arrives.
Earthquake early warning system
An earthquake early warning (EEW) system detects the first, fast seismic waves of an earthquake in progress, alerting people seconds before slower, damaging shaking arrives.
Earthquake engineering
Earthquake engineering, also called seismic engineering, is the civil engineering field covering seismic design of buildings and bridges, retrofit of existing structures, and ground motion hazard evaluation.
Earthquake light
Earthquake light, also called earthquake lightning, is an atmospheric luminous phenomenon, seen as sheet lightning, balls of light, or glows, reported before, during, and after earthquakes since antiquity.
Earthquake location
Earthquake location is the seismological procedure that determines where and when an earthquake started, solving for the hypocenter's coordinates and origin time from arrival times recorded at many stations.
Earthquake prediction
Earthquake prediction is the claim that the date, location, and magnitude of a future earthquake can be specified in advance, which the USGS says is not yet possible.
Earthquake storm hypothesis
The earthquake storm hypothesis, proposed by Amos Nur and Eric Cline in 2000, attributes the Late Bronze Age collapse to a 50-year series of earthquakes.
Earthquake swarm
An earthquake swarm, also called a seismic swarm, is a sequence of earthquakes clustered in a small area with no dominant mainshock, often tied to volcanic or geothermal activity.
Earthquake swarms
An earthquake swarm is a sequence of many similar, mostly small earthquakes clustered in space and time without a mainshock, often driven by fluids or magma.
Earthquake tomography
Earthquake tomography, or local earthquake tomography, is a seismological imaging method that uses earthquake wave travel times to map three-dimensional velocity structure of Earth's interior.
Earthquake zones of India
The earthquake zones of India are four seismic hazard zones, II to V, defined by the Bureau of Indian Standards, with Zone V the most severe.
Earthquakes and floods of 1068 (Xining era)
The earthquakes and floods of 1068 (熙宁地震水灾) were disasters in Hebei during Emperor Shenzong's Xining era, part of flooding that killed roughly a million people after 1048.
Earthrise
Earthrise: the photograph of Earth rising above the lunar horizon, taken by Apollo 8 astronaut William Anders on December 24, 1968 (NASA frame AS08-14-2383), unplanned, and credited with galvanizing the environmental movement and the first Earth Day.
EarthScope
EarthScope was a National Science Foundation earth science program, running 2003 to 2018, that studied the North American continent with USArray, the Plate Boundary Observatory, and SAFOD.
Earthsea
Earthsea is Ursula K. Le Guin's fantasy archipelago, setting of six books from A Wizard of Earthsea (1968) to The Other Wind (2001), centered on Ged, true-name magic, balance, and Taoist themes.
Earthset
Earthset: the apparent setting of Earth below the lunar horizon, seen from a spacecraft passing the Moon's far side. Named widely during NASA's Artemis II flyby of April 6, 2026, echoing Apollo 8's 1968 Earthrise; earlier examples include Zond 7 (1969).
Earthship
An Earthship is a passive solar, earth-sheltered dwelling originated by Taos, New Mexico architect Michael Reynolds in the 1970s, built of rammed-earth-filled tires and designed to supply its own heating, electricity, water, and food.
Earthstar morphology and development
Earthstar morphology and development describes how earthstar fungi are constructed and develop: a three-layered exoperidium splits into rays that lift the spore sac, and raindrops pump spores out passively.
Earthworks
Earthworks: archaeological features from past human activity, positive banks and mounds or negative hollows like hollow ways; surveyed by lidar and plane table, threatened by ploughing, preserved under grass; includes Ohio's Hopewell Ceremonial Earthworks, UNESCO-listed 2023.
Earthworm
Earthworm, terrestrial segmented annelid worm (phylum Annelida), about 6,200 species in anecic, endogeic, and epigeic groups; ecosystem engineer of soils, invasive in northern North American forests, and raised as Eisenia fetida for vermicomposting.